When you ask a Midchilda what he knows about the Succession War 170 years ago, he will tell you that it was a free-for-all between humans, aliens and every subfaction in between that almost reduced Ordered Space into atoms. The Belka Imperiallum collapsed, known boundaries of sovereignity were wiped clean, even humanity itself was threatened with extinction. By the time the hastily-cobbled-together force of the Galactic Defence Initiative managed to gain a grip on the core worlds 2 decades later, the entire populace had practically sworn off of technology, and warfare in general. In the years that passed, the TSAB would be formed and so began a new era of peace. To avoid a future war of such catastrophic proportions, the TSAB sought, amongst its multi-pronged rebuilding effort, to re-educate the populace about war. Anything related to war was banned; any offending media was haphazardly chucked into the Infinite Library and assumed to be lost for good; weapon research halted and outlawed; anyone deemed "hawkish" were persecuted...
Soon, even the very principles of how to engage in organized battle had all but faded from the people's minds.
But one group was tasked to hold onto to those memories lest they were needed again. Over the years, officers have left the corp and started their own pockets of special units scattered throughout the Multiverse, but they and their successors all recognize their source...
STEEL 
TALONS
A post-War battalion, the Steel Talons were an experimental task force specialized in field testing cutting edge technologies for GDI's original and traditional "superior frontal firepower" doctrine, before future policies retired the bulk of the organization's walker arsenal in favor of expanded and improved naval-based assets, with an emphasis on the use of mages as a basic fighting unit.
This sub-faction features several war-relics updated to the new rules of the game:
The
Titan and
Wolverine knightmare frames exist as magical counterparts of their scientific former selves. With their greater Linker Cores and the similarity to the magical signatures of the Belka, their main guns were less affected by AMF and the tiny regiment on Midchilda clung on and helped turn the tide late in the Jail Incident. Even the vehicles themselves can be upgraded with active AAMF countermeasures and in doing so extend the effective ranges of both garrisoned mages and onboard weaponry.
The Steel Talons' variation of the Juggernaut is called a
Behemoth. These massive guns on legs have been upgraded with more armor and like the rest of the mechanized force have swapped out fusion engines for Linker Cores, allowing them to deliver powerful and unparalleled ground-based bombardment magics. They also come with bunkers that can be garrisoned by mages, adding more versatility to the heavy hitting force.
In place of the Starhawk aerospace superiority fighter, they have the old
Valkyrie transformable walker-fighters with a magical twist.
Modern-era field defence technology were not yet available to all these heavy-hitters however. In their place, these guardian cannons are outfitted Railguns and small-caliber Ion Cannons that run on mana instead of nova reactors.
Minor upgrades to standard TSAB units are also featured: their
Combat Technicians are combat-trained and armed with small calibre devices, their
Service & Courier Vehicles have a bunker able to carry a squad of mages granting them better protection of their supply chain, and their
Storm Raiders are capable of repairing vehicles in exchange for being able to outfit the unit with independent offensive abilities.
For all their sheer prowess in vehicles however, the Talons have no other infantry outside of magical assault squads, battlemage squads, spotter squads and technicians, and lack some of the high-end support powers that are available to the other factions of the TSAB/GDI, like
Orbital Bombardment and
Deep Strike tactics. They also do not have access to the latest in field defence technology. And lastly, due to their emphasis on "magical but still hawkish tactics and technologies", they lack in political clout and subsequently are seldom assigned any Aces, if not any at all.